The God Argument and the Observer Effect

"There's no way that you could prove that I don't, my penguin that I just introduced to you doesn't exist," he says. "It seems self-defeating, because like your own lights be open to the fact that it's just as possible that it's confirmation of materialism right? So I'm not sure what point out there is." He adds: "We should just probably discard these extremely ad hoc ways of reasoning".